
Micrel, Inc.
KSZ8862-16/32MQL
April 2007
31
M9999-040407-3.0
Spanning Tree
Process
PTF1
IGMP Process
Port Mirror
Process
Port VLAN
Membership
Check
PTF2
- Check receiving port's receive enable bit
- Check destination port's transmit enable bit
- Check whether packets are special (BPDU)
or specified
- RX Mirror
- TX Mirror
- RX or TX Mirror
- RX and TX Mirror
- Applied to MAC #1 and MAC #2
- IGMP will be forwarded to the host port
Figure 8. Destination Address Resolution Flow Chart in Stage Two
The KSZ8862M will not forward the following packets:
1. Error packets.
These include framing errors, Frame Check Sequence (FCS) errors, alignment errors, and illegal size packet errors.
2. 802.3x pause frames.
The KSZ8862M intercepts these packets and performs the flow control.
3. "Local" packets.
Based on destination address (DA) look-up. If the destination port from the lookup table matches the port from which
the packet originated, the packet is defined as "local."